1.10.3.3: L-ascorbate oxidase

This is an abbreviated version!
For detailed information about L-ascorbate oxidase, go to the full flat file.

Word Map on EC 1.10.3.3

Reaction

4 L-ascorbate +

O2
= 4 monodehydroascorbate + 2 H2O

Synonyms

AA oxidase, AA-ox, AAO, AAO1, AAO2, AAO3, Aao4, AO1, AO4, AOase, ASC oxidase, ascorbase, ascorbate dehydrogenase, ascorbate oxidase, ascorbic acid oxidase, ascorbic oxidase, ASOM, L-ascorbate:O2 oxidoreductase, L-ascorbic acid oxidase, oxidase, ascorbate

ECTree

     1 Oxidoreductases
         1.10 Acting on diphenols and related substances as donors
             1.10.3 With oxygen as acceptor
                1.10.3.3 L-ascorbate oxidase

Natural Substrates Products

Natural Substrates Products on EC 1.10.3.3 - L-ascorbate oxidase

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NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
2 L-ascorbate + O2
2 L-dehydroascorbate + 2 H2O
show the reaction diagram
2 L-ascorbate + O2 + 4 H+
2 monodehydroascorbate + 2 H2O
show the reaction diagram
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formation of free radicals during the oxidation reaction by ascorbate oxidase
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-
?
4 L-ascorbate + O2
4 monodehydroascorbate + 2 H2O
show the reaction diagram
L-ascorbate + O2
monodehydroascorbate + H2O
show the reaction diagram
L-ascorbic acid + O2
L-dehydroascorbic acid + H2O
show the reaction diagram
additional information
?
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cell wall-localized enzyme that catalyses the oxidation of ascorbate to the unstable radical monodehydroascorbate, which rapidly disproportionates to yield dehydroascorbate and ascorbate, and thus contributes to the regulation of the ascorbic acid redox state regulating the cell redox status
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?